Does anyone have any experience with the SnowRanger Ski Resort maps product (HERE)? It has the area trails and facilities mapped and allows you to locate yourself and keep track of where you have been. The maps are also route-able (trails and lifts considered one-way "roads"). Has anyone used these maps while skiing? I have no connection with the company but will probably buy the maps for my region. FWIW, they also list ATV trail maps as a separate product. Here is a pic from their web site: